RepRap for Science—How to Use, Design, and Troubleshoot the Self-Replicating 3-D Printer - Open-Source Lab: How to Build Your Own Hardware and Reduce Research Costs - page 148

FIGURE 5.51 Bill of materials for the limit switches.
Mount your limit switches to the end stop holders. Plastiform the threads into the plastic
and put on all the M2 screws. Mount the three limit switches to x -, y -, and z -axes, respectively,
as shown in Figures 5.52 , 5.53 and 5.54 .